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The U.S. Nuclear Regulatory Commission is in the process of rescinding or revising guidance and policies posted on this webpage in accordance with Executive Order 14151 Ending Radical and Wasteful Government DEI Programs and Preferencing, and Executive Order 14168 Defending Women From Gender Ideology Extremism and Restoring Biological Truth to the Federal Government. In the interim, any previously issued diversity, equity, inclusion, or gender-related guidance on this webpage should be considered rescinded that is inconsistent with these Executive Orders.

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Diablo Canyon Power Plant, Unit 1

Location: Avila Beach, CA (12 miles WSW of San Luis Obispo, CA); Region IV; Type: Westinghouse Four-Loop; Licensed MWt: 3304

Diablo Canyon Power Plant, Unit 2

Location: Avila Beach, CA (12 miles WSW of San Luis Obispo, CA); Region IV; Type: Westinghouse Four-Loop; Licensed MWt: 3468

Diablo Canyon Nuclear Power Plant, Units 1 and 2 - Letter Re: Notification of the Availability of the Post-Shutdown Decommissioning Activities Report in the Federal Register (EPID L-2019-LRL-0004)

March 12, 2020 Mr. James M. Welsch Senior Vice President, Generation and Chief Nuclear Officer Pacific Gas and Electric Company Diablo Canyon Nuclear Power Plant P.O. Box 56, Mail Code 104/6 Avila Beach, CA 93424 SUBJECT: DIABLO CANYON NUCLEAR PO...

LER 03-003-00, Diablo Canyon Unit 2 Technical Specification 3.4.12 not Met Due to Personnel Error.

Pacific Gas andElectric CompanyDavid H. Datley Diablo Canyon Power PlantVice President and P0 Box 56General Manager Avila Beach, CA 93424April 30, 2003 8055454350Fax 8055454234PG&E Letter DCL-03-050U.S. Nuclear Regulatory CommissionATTN: Document Control DeskWashington, DC 205...

Forwards "Adequacy of Seismic Margins Assuming Increase in Amplitude of Diablo Canyon Long-Term Seismic Program, Horizontal & Vertical Ground Motions as Described in SSER 34."

ACCELERATED DIS UTION DEMONS . TION SYSTEMREGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)ACCESSION NBR:9201060130 DOC.DATE: 91/12/26 NOTARIZED: NOFACIL:50-275 Diablo Canyon Nuclear Power Plant, Unit1,Pacific Ga50-323 Diablo Canyon Nuclear Power Plant, Unit 2,Pacific GaAUTH.N...

Declaration of Richard Ayres Counsel for Friends of the Earth, Regarding Waiver of 10 CFR Section 54.4, 54.21 and 54.29 (a) as Applied to the Diablo Canyon License Renewal Proceeding.

1 BEFORE THE UNITED STATES NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD ________________________________________________ In the Matter of ) ) PACIFIC GAS & ELECTRIC COMPANY ) Docket No. 50-275-LR ) Docket No. 50-323-LR (D...

04/04/01 - Ltr K Achadjian, San Luis Obispo County, re appreciation of support to NRC (Diablo Canyon) - ML010940338

April 4, 2001Katcho AchadjianChairman, Board of SupervisorsSan Luis Obispo CountyRoom 370, County Government CenterSan Luis Obispo, CA 93408SUBJECT: APPRECIATION OF YOUR SUPPORT TO THE NUCLEAR REGULATORYCOMMISSIONDear Mr. Achadjian:On behalf of the staff at the Nuclear Regulat...

12/12/2007 J. Hall, Memo Re: Summary of the December 4, 2007, Meeting with Pacific Gas and Electric Company on the Diablo Canyon Independent Spent Fuel Storage Installation.

December 12, 2007 MEMORANDUM TO: Nader Mamish, Deputy Director Licensing and Inspection Directorate Division of Spent Fuel Storage and Transportation Office of Nuclear Material Safety and Safeguards FROM: James R. Hall, Senior Project Manager /RA/ Licens...

5/12/04, Diablo Canyon, Units 1 & 2 - TS Pages - Issuance of Amendment Re: Increasing Flexibility in Mode Restraints (TAC Nos. MC0895 and MC0896).

LCO Applicability3.03.0 LIMITING CONDITION FOR OPERATION (LCO) APPLICABILITYLCO 3.0.1 LCOs shall be met during the MODES or other specified conditions inthe Applicability, except as provided in LCO 3.0.2 and LCO 3.0.7.LCO 3.0.2 Upon discovery of a failure to meet an LCO, the R...

Forwards documentation on San Onofre & Diablo Canyon sites re consideration of earthquakes in emergency planning,in response to ACRS 298th meeting request.

?hb...*-)o-bpn ano##oUNITED STATESg/NUCLEAR REGULATORY COMMISSIONo8I. ADVISORY COMMITTEE ON REACTOR SAFEGUARDS'WASHINGTON, D. C. 20656OFebruary 20, 1985,,,,,MEMORANDUM FOR:D. W. Moeller, Chairman' [[ACRS Subcommittee on Site EvaluationFROM:0. S. Merrill, Staff Engineer3hSUBJEC...

Diablo Canyon-2012-12 Final Written Exam.

U.S. Nuclear Regulatory Commission Diablo Canyon RO Written Examination Applicant InformationName: KEY Date: 21 November, 2012 Facility/Unit: Diablo Canyon Region: I II III IV Reactor Type: W CE BW GE Start Time: Finish Time: Instructions Use the answer...

LER 09-003-00 for Diablo Canyon, Unit 2 re Containment Sump Recirculation Valve Position Interlock Failure Due to Inadequate Testing.

Pacific Gas and Electric Company® J_a_me_s R~llecker Diablo Canyon-7FPo~we""ro"-'Pla=nt,------__ -----------'Site Vice President Mail Code 104/5/601 p. O. Box 56 December 23,2009 PG&E Letter DCL-09-094 u.s. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, ...

Diablo Canyon Unit 1, License Amendment 111, Revise Allowed Outage Time in TS 3/4.8.1.1, Electrical Power Systems, to Allow Operation Mode 3 During Replacement of Transformer.

March 8, 1996'Mr. Gregory M. Rueger Pacific Gas and Electric Company NPG - Mail Code A]OD P. 0. Box 770000 San Francisco, California 94177 SUBJECT: ISSUANCE OF AMENDMENTS FOR DIABLO CANYON NUCLEAR POWER PLANT, UNIT NO. 1 (TAC NO. M94539) Dear Mr. Rueger: The Commission has iss...

Diablo Canyon, Units 1 and 2 - Affidavit and Position Paper from Stanley H. Mendes.

'FROM; Stqalcy,'8. Hendae"8+i~ (Hel'en'a,Montana, 1935; Taft, California, 1952; Golden Gate Park,ISan Francisco, 1957) recorded on sedimentary rock.A review of the "Recommended Earthquake Design Criteriafor the Nuclear "v~er Plant Unit. II Diablo C'anyon Site",dated June 1968,...

Detail Quarterly Licensing Actions Fee Report for NRR for the Period 12/23/2007 - 03/15/2008 for Diablo Canyon Units 1 and 2.

LFARB44 DETAIL QUARTERLY LICENSING ACTIONS FEE REPORTPAGE: 1DOCKET: 05000275 - DIABLO CANYON 1COMPLETE FEE RITSDATE TAC # BEAR INITFOR NRRFOR THE PERIOD 12/23/2007 - 03/15/2008- REGION 4 AMENDMENTSWEEK REGULAR NON REG TOTALNAME ENDING HOURS HOURS HOURSRUN DATE: 03/27/2008FEE B...

Non-Public Security Inspection Plan for Diablo Canyon Nuclear Power Plant, Units 1 and 2 (NRC Physical Security Inspection Report Numbers 05000275/2015402 AND 05000323/2015402).

OFFICIAL USE ONLY – SECURITY-RELATED INFORMATION “Enclosure transmitted herewith contains SUNSI. When separated from enclosure, this transmittal document is decontrolled.” OFFICIAL USE ONLY – SECURITY-RELATED INFORMATION March 2, 2016 Mr. Edward D. Halpin, Senior Vi...

Discussion Paper on Kashiwazaki-Kariwa Plant Site in Japan and two U. S. Plants, Diablo Canyon and San Onofre and their Seismic Settings.

On July 16, 2007, a magnitude-6.6 quake occurred near the Kashiwazaki-Kariwa plant site.The Kashiwazaki-Kariwa plant site in Japan-the world's largest, with seven reactors producing8,2120 MW. The site consist of 5 BWRs and 2 ABWRs. The epicenter of the quake wasabout 8-10 km f...

06/19/19 Summary of Meeting with Pacific Gas and Electric Company Regarding Forthcoming Activities Associated with Diablo Canyon Nuclear Power Plant, Units 1 and 2 Planned Decommissioning (EPID L-2019-LRM-0034)

July 22, 2019 LICENSEE: Pacific Gas and Electric Company FACILITIES: Diablo Canyon Nuclear Power Plant, Units 1 and 2 SUBJECT: SUMMARY OF JUNE 19, 2019, MEETING WITH PACIFIC GAS AND ELECTRIC COMPANY REGARDING FORTHCOMING ACTIVITIES ASSOCIATED WITH DIABLO CANYON NUCLEAR...

Diablo Canyon Unit 1, Exemption for Extension of Submittal Date for Updated FSAR to ensure more Accurate Reflection of Design of Unit After Completion.

Docket No: 50-275Mr. J. 0. Schuyler, Vice President Nuclear Power Generation, Licensing Pacific Gas & Electric Company 77 Beale Street, Room 1435 San Francisco, California 94106Dic+ribution SDc lent Control (50-275) NRCT PDR L PDR PRC System FEB 12 1984 NSIC LB#3 Reading JLee ...

Diablo Canyon, Units 1 & 2, License Amendment 136, Revises TS 6.9.1 8 of Current TSs and TS 5.6 of Improved TSs, to Allow Use of NRC Approved Addenda to WCAP-10054-P-A, to Determine Core Operating Limits.

November 15, 1999Mr. Gregory M. Rueger Senior Vice President and General Manager Pacific Gas and Electric Company Diablo Canyon Nuclear Power Plant P. 0. Box 3 Avila Beach, CA 93424 SUBJECT: ISSUANCE OF AMENDMENTS FOR DIABLO CANYON NUCLEAR POWER PLANT, UNIT NO. 1 (TAC NO. MA48...

Diablo Canyon Unit 1 and 2, License Amendment 119 and 117, Revise 23 TS Surveillane Requirements to Support Implementation of Extended Fuel Cycles.

April 14, 1997 Mtr. Gr'g~ry'M. Rueger Pacific Gas and Electric Company NPG - Mail Code AlOD P. 0. Box 770000 San Francisco, California 94177 SUBJECT: ISSUANCE OF AMENDMENTS FOR DIABLO CANYON NUCLEAR POWER PLANT, UNIT NO. I (TAC NO. M95910) AND UNIT NO. 2 (TAC NO. M95911) Dear ...

Comment (1) of J.A. Savage Opposing a 20-year License Extension to Diablo Canyon, Units 1 and 2.

R t JL E,-.KLuI2015 V.fl j7 pIN 2, '47J. A. Savage1200 Stagecoach Rd.Trinidad, CA 95570707 232 4053mobile 510 593-7149jasavagehonest@gmaiI.comJuly 8, 2015Re: NRC-2009-0552 Diablo Canyon license extension~7AI~/~ ~¾Cindy BladeyOffice of AdministrationMail Stop OWFN-12 H08Nuclear...

2007/08/30 - Pacific Gas and Electric (Diablo Canyon) - Letter to the commissioners from Lisa B. Clark Regarding the Final Environmental Assessment

August 30, 2007 Dale Klein, Chairman Mail Stop: O 16 C1 U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Peter B. Lyons, Commissioner Mail Stop: O 16 C1 U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Edward McGaffigan, Jr., Commissioner M...

Diablo Canyon, Units 1 and 2 Inservice Inspection Relief Requests for Containment.

Pacific Gas and Electric Company Lawrence F. Womack Diablo Canyon Power Plant Vice President P.O. Box 56 Nuclear Technical Services Avila Beach, CA 93424 805.545.6000 May 11, 2000 PG&E Letter DCL-00-075 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington,...

Diablo Canyon, Units 1 and 2 - 10 CFR 71.95 Report Regarding Energy Solutions' Model 8-120B Shipping Cask.

Pacific Gas and Electric Company® August 24, 2015 PG&E Letter DCL-15-102 Barry S. Allen Vice President, Nuclear Services Diablo Canyon Power Plant Mail Code 104/6 P. 0. Box 56 Avila Beach; CA 93424 805.545.4888 Internal: 691.4888 Fax: 805.545.6445 Mr. Mark Lombard, Director 10...

Diablo Canyon, Units 1 & 2 - Response to NRC Request for Additional Information Regarding License Amendment Request 04-05, "Revision to Technical Specification (TS) Requirements for Handling Irradiated Fuel in the Primary Containment....

Pacific Gas andElectric CompanyJames B. Becker Diablo Canyon Power PlantVice President P. 0. Box 56Diablo Canyon Operations and Avila Beach, CA 93424Station DirectorMay 6, 2005 Fax:805.545.4234PG&E Letter DCL-05-051U.S. Nuclear Regulatory CommissionATTN: Document Control DeskW...

Diablo Canyon, Units 1 & 2, Response to NRC Environmental Audit Information Request for the Applicant's Environmental Report - Operating License Renewal Stage.

Pacific Gas andElectric Company®August 2, 2010James R. BeckerSite Vice PresidentDiablo Canyon Power PlantMail Code 104/5/601P 0. Box 56Avila Beach, CA 93424805.545.3462Internal: 691.3462Fax: 805.545.6445PG&E Letter DCL-10-081U.S. Nuclear Regulatory Commission11555 Rockville Pi...